Here is the full list of all 47 Resident Evil 0 achievements. It takes around 40-50 hours to unlock all of the achievements on Windows.
Finish the game on Hard difficulty.
Read all files.
Obtain all weapons.
Finish the game with rank S.
Finish the game without using a First-Aid Spray.
Finish the game without using a recovery item (including Green Chemicals).
Put on Team Wesker costume.
Finish the game without saving.
Finish the game without combining herbs.
Kill 50 enemies with the Death Stare at full charge.
Defeat all enemies in Leech Hunter.
Collect all of only one color of Leech Charms.
Change into a costume.
Finish Leech Hunter with rank A.
Finish Leech Hunter with rank E or above.
Play Leech Hunter.
Combine every type of herb with each other.
Complete the treatment plant.
Defeat Queen Leech.
Defeat all bosses except Centurion using Rebecca.
Obtain all keys and use them all.
Defeat the Proto Tyrant.
Complete the factory.
Fight off the Proto Tyrant.
Complete the laboratory.
Use a Green Chemical.
Defeat Infected Bat.
Defeat 16 bats in the church.
Get picked up by the Infected Bat.
Complete the training facility.
Defeat Mimicry Marcus for the first time only using a knife.
Defeat Mimicry Marcus with a Molotov Cocktail or a Napalm Grenade.
Play the piano using Rebecca.
Defeat a zombie by stomping on them.
Create a Custom Handgun.
Shoot down a Hunter or an Eliminator while they are jump attacking in the air.
Try to push something heavy with Rebecca.
Defeat Centurion.
Destroy a zombie's legs.
Defeat an enemy with a critical-hit headshot.
Attack an enemy to save your partner who is grappling with that enemy.
Complete the train.
Defeat an enemy by burning them.
Defeat an enemy with a knife.
Create a Molotov Cocktail.
Defeat Stinger.
Break free of a Cerberus while they are biting you or trying to push you down.